Wild Wonders of Europe / Hermansen / View looking up into Oak (Quercus sp) canopy, Glendalough valley, County Wicklow, Republic of Ireland, June 2009

Jouan & Rius / Low angle shot looking up through canopy showing crown shyness / gaps between trees , Tortuguero NP, Costa Rica

Mark Moffett / Crown shyness among secondary growth trees, Selangor, Peninsular Malaysia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) forest, New South Wales, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) forest, New South Wales, Australia

Pete Oxford / Scalesia (Scalesia pedunculata) forest showing crown shyness, highlands of Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Rainforest, Iwokrama Rainforest Reserve, Guyana

Tim Fitzharris / Forest canopy of O'hia trees showing crown shyness, Lava Tree State Park, Hawaii

Ingo Arndt / Kapur (Dryobalanops lanceolata) forest showing crown shyness, Selangor, Malaysian Peninsula

Ingo Arndt / Kapur (Dryobalanops lanceolata) forest showing crown shyness, Selangor, Malaysian Peninsula

Christian Ziegler / Looking up into leafless canopy in the winter showing crown shyness, blue hour, Jasmund National Park, Ruegen, Germany

Winfried Wisniewski / Rainforest canopy crown shyness, Oahu, Hawaii

Mark Moffett / Kapur (Dryobalanops lanceolata) trees showing crown shyness, Malaysia

Mark Moffett / Crown shyness among secondary growth trees, Selangor, Peninsular Malaysia

Winfried Wisniewski / Rainforest canopy crown shyness, Oahu, Hawaii